Hinges in cast metal plates



(No Model.) 2 She eeeeeeeee 1.

N. BURDICK.

- MEANS FOR FORMING HINGES IN MST METAL PLATES. No. 351.041. PatentedOct. 19, 1886.

(No Model.) 2 SheetsSheet 2.

N. BURDIOK. MEANS FOR FORMING HINGBS IN CAST METAL PLATES. No. 351.041.Patented Oct. 19, 1886.

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UNITED STATES NORMAN BUBDIGK, OF

ALBANY, XEW' YOR K.

MEANS FOR FORMING HINGES lN CAST-METAL PLATES.

. SPECIFICATION forming part of Letters Patent No. 351,031, datedOctober 19, 1886.

Application filed April 17, 1886.

Tea whom. it may concern.-

Be it known that I, NORMAN BURDICK, a citizen of the United States,residing at Albany, in the county of Albany and State of New York,haveinvented a new and Improved Means for Forming Hinges in Cast MetalPlates, of which the following is a specification.

My invention relates to a new and improved means for forming hinges ofcast-metal plates in which one of the knuckles will be produced with afixed pintle and the other with a hole suitable to receive said pintle;and my invention consists in the means hereinafter described, andspecificallyset forth inthc claims.

The objects of my invention are, first, to produce in castmetal plateswithout the use of core-prints in the patterns,and without the labor andexpense of drilling knuckles and riveting pins with same, hinge-knuckleswith fixed pins which will be uniformly the same inboth situation andrelative position in the knuckles cast from the same patterns, and betherefore perfectly fitted for use with any one of the duplicatepin-holes made in the coacting knuckles of hinges cast from the samepattern; and, second, to produccin cast-metal plates without the use ofcore-prints and the expense and time of drilling, hinge-knuckles inwhich one of them will have apermanentlyfixed pin, while the othercoacting knuckle will have a corresponding pin-hole produced by means ofa tube which is suitably placed in the mold by the pattern andincorporated with the cast metal of the coacting knuckle when the castis made. I attain these objects by the means illustrated in theaccompanying drawings, forming a part of this specification, in which-Figure 1 is a perspective view of the pinholding hood, which can beemployed for carrying my invention into practice. Fig. 2 is aperspective view of the pin. Fig. 3 is a plan view of hood and pinunited. Fig. 4c is an elevation of the same with the hood shown insection. Fig. 5 is a plan view of the pattern with which the hood andpin are employed. Fig. 6 is a side elevation of the same. Fig. 7 is aplan View of pattern, hood, and pin arranged for molding. Fig. 8 is asectional view taken transversely to the axis of the pin in Fig.

Serial No.199252. (No model.)

7. Fig. 9 is a sectional view of pattern and hood in place in the formerand the pin in place in the hood. Fig. 10 is aview of pattern, hood, andpin in the mold. Fig. 11 isasectional view of the same, showing the pinin place at the parting-line of the halves of the mold. Fig. 12 is aviewof the mold with the pattern withdrawn and the hood and pin in placeready for receiving the molten metal. Fig. 13 is a view in thetransverse of the same.

Fig. 14 is a plan view of the product. Fig. 15 is a plan view of theproduct-th'at is, the

plate with knuckle having a fixed pin and a plate having a coactingknuckle with a pinhole for pivoting on the pin; and Fig. 16 is asectional view of two coacting knuckles of a hinge of two cast plates inwhich one of the knuckles has with it the fixed pin and the other apin-hole produced by molding and incorporation of a sheet-metal pin-tubein the knuckle when the cast is made.

The same letters of reference refer to like parts throughout the severalviews.

In the drawings, A represents the pin-holding hood, which is made ofthin sheet metal, preferably of sheet-tin bent in form, as shown, inwhich the top portion, a, is connected with the angular sides (ta, andthe angular side portions, a a, are cast perforated relatively at thesame points and with holes which will nicely receive the pin to be thefixed pin of the hinge.

B is the hinge-pin, having its body I) corresponding with theperforations (t a in the side pieces of the hood A, and having on one ofits ends the head If, provided with a square shoulder, as shown. Thispin B is used in connection with hood A by having its cylindrical bodyI) passed through both perforations c a of the hood, with the shoulderI)" of head bagainst the outer surface of one of the side pieces, a, ofthe hood, as shown in Figs. 3 and 4.

G is the pattern of a door or equivalent plate, and O is the knuckleportion of this pattern. This knuckle portion 0 of the pattern is madewith a width corresponding with the length of the top portion, a, ofthehood A, from one side portion a to the other, as shown in Fig. 7. Inthis knuckle portion (lis made the recess or notch 0, Figs. 5 and 6.This notch is madein form and depth to correspond with the outside withshouldered seats e-e, which are sunken below the plane of the uppersurface of knuckle Cto a depth about equal to the thickness of the sheetmetal of the hood A, as shown in Figs. 6 and 8. The edges at the ends ofthe recess a are provided with the vertical shouldered seats e e, whichare sunken below the plane of the side surfaces of the knuckle portionas shown in Fig. 5, to a depth corresponding with the thickness of sideportions, to a, of hood A. These shouldered seats 6 c and c e are madewith such an outline as to correspond with the outline of edges of theseveral portions of the hood, so that the latter will nicely fit in thesaid shouldered seats and be held from shifting in any direction inrelation to the recess 0 on the knuckle C.

When the hood A, holding the pin B in position, as shown in Figs. 3 and4, is set in place in the knuckle portion 0 of the pattern, with theedges all around of the portions a and a a of this hood in holding withthe shouldered seats 6 ea c bounding theedges of the recess or notch c,the pin B will be accurately held in line with the axis ofsaid knuckle,as shown in Figs. 7 and 9, and the portion of the pin contained withinthe span of the hood will be held clear of contact with the pattern, asshown in Figs. 8 and 9, and the bearings of the several edges of theportions of the hood on the shoul-v dered seats bounding the recess inthe knuckle will operate to hold the pin in the one and same truesituation and position as when first set, as shown in Figs. 7 and 9.

Pattern G is to be molded from the nowel or drag part of the flask inthe usual manner, the pin-holding hood and its combined pin B havingbeen previously set in place in the shouldered seats 6 e e e,boundingthe recess or notch in the knuckle of the pattern, as illustrated inFigs. 7, 8, and 9. The sand will be riddled on the pattern, and themolding will be proceeded with in the manner generally practiced by thetrade. In the molding no sand will enter the recess 0 of the knuckle ofthe pattern, as the sides and top of the hood andthe head and body ofpin B will operate to close all portions of the recess against entranceof the sand. When the molding is completed, the flasks will be togetherinverted and brought into position from that shown in Figs. 10 and 11 tothat shown in Figs 12 and 13, with the drag side D down and cope side Duppermost, when the cope will be lifted, and pattern 0, with its notchedknuckle O, drawn from the drag, leaving the hood A and pin B remainingin the mold, the former in an inverted position, as

I illustrated in Figs. 12 and 13, so that when the two parts of the moldare joined preparatory to pouring the metal the pin B will be in itstrue and designed situation and position in the mold E, the sand aroundthe portion of pin B outside of hood A, and at the outside of theportions a a a of the hood, holding both the hood and the pin fromshifting in the mold. Themolten metal will then be poured into the moldin the usual manner, and will flow around the portion of the pincontained within the span of the hood, and also fill the mold andproduce the cast plate with knuckle H, having the pin B held tightly bythe cast metal around the portion of the same between the sides a a ofthe hood, as illustratedin Fig. 16.

In Figs. 15 and 16 the product of this new means of forming knuckleshaving fiXed pins for hinges of cast plates is shown to be used with acoacting knuckle, H, east with a doorframe or equivalent plate, and inFig. 16 the knuckle H is shown to have its pin-hole it pro duced bymeans of the sheet-metal pin-tube or pin-hole shell S, illustrated anddescribed in Letters Patent No. 317 ,498, granted to myself and James A.Sandford, May 12, 1885. By using the product of this invention with theproduct of the invention described in the above 7 mentioned patent I amenabled to produce with the doors and frames of doors the coactingknuckles of hinges, in which the knuckle of the hinge on the door willhave in it a firmly'fixed pin, which will be in a position both trueandaccurate for nicely hinging with the knuckle on the door-frame, havingits pin-hole produced by the means described and illustrated in theabove-mentioned patent.

It will be readily understood after an examination of the Letters Patentabove referred to that when the notches or recesses in the.

patterns of both the door and door-frame are made the same in form andsize in their respective knuckle portions, and when there are used inboth cases hoods which are substantially the same in size and form withthehood used with the door-knuckle having holes for receiving the pin,provided with perforations for the pin, located relatively in the hoodas is the tube or pin-hole shell in the hood used with the door-frameknuckle, the pin of the one and hole in the other of the knuckles willbe in correspondence as to relative location and position in therespective knuckles of the hinges so produced.

By my above-described improved means of producing knuckles of hingeswith fixed pins I am enabled to duplicate in cast plates cast from thesame pattern an exactly-corresponding knuckle and affixed pin, whichwill be suitable to be used with any one of a number of duplicate plateshaving knuckles with pinholes produced by the process dcscribed in thepatent before mentioned.

In Fig. let the shouldered end of the pin is shown to be provided withthe screw-threaded stem 12 by means of which the ornamental knob-head Bis secured to the fixed pin B.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s-

1. The pin B, provided with shoulder 6 and the sheet-metal hood A,holding said pin,

whereby said pin will be suitably adjusted within the hinge-knucklepattern, of the pin in relation to a hinge-knuckle pattern by the B,provided with shoulder b, and the hood A, edge margins of the severalportions of the having correspondence with said shoulderhood holdingwith shouldered seats made at seats and holding said pin, substantiallyas 5 the edges of the recess in the hinge-knuckle and for the purposesset forth.

pattern, and will be supported within the mold T T when the pattern iswithdrawn from the sand, 3 ORMAL substantially as and for the purposesset forth. Vitnesses: 2. The combination, with the shoulder-seats ALEX.SELKIRK, 10 e e at the respective edges of a recess made ARTHUR BUGDEN.

